package com.equipment.user.web.web.utils;


import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

public class SpringContextUtil implements ApplicationContextAware {
	 private static ApplicationContext applicationContext; // Spring应用上下文环境
	 
	    // 下面的这个方法上加了@Override注解，原因是继承ApplicationContextAware接口是必须实现的方法
	    @Override
	    public void setApplicationContext(ApplicationContext applicationContext)
	            throws BeansException {
	        SpringContextUtil.applicationContext = applicationContext;
	    }
	 
	    public static ApplicationContext getApplicationContext() {
			return applicationContext;
		}
	 
	    public static Object getBean(String name) throws BeansException {
	        return applicationContext.getBean(name);
	    }
	 
	    public static Object getBean(String name, Class requiredType)
	            throws BeansException {
	        return applicationContext.getBean(name, requiredType);
	    }
	 
	    public static boolean containsBean(String name) {
	        return applicationContext.containsBean(name);
	    }
	 
	    public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {
	        return applicationContext.isSingleton(name);
	    }
	 
	    public static Class getType(String name)    throws NoSuchBeanDefinitionException {
	        return applicationContext.getType(name);
	    }
	 
	    public static String[] getAliases(String name) throws NoSuchBeanDefinitionException {
	        return applicationContext.getAliases(name);
	    }
}